Alkali-Aggregate Reaction in Concrete Containing Fly Ash: Final Report

Carrasquillo, Ramon L.; Farbiarz, Josef

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Alkali-Aggregate Reaction in Concrete Containing Fly Ash: Final Report

1989-10-01
By Carrasquillo, Ramon L. ; Farbiarz, Josef

File Language:

English

Details

Creators:

Carrasquillo, Ramon L. ; Farbiarz, Josef
Corporate Creators:

University of Texas at Austin. Center for Transportation Research
Corporate Contributors:

Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Admixtures Aggregates Alkali Aggregate Reactions Alkali Silica Reactions Fly Ash Minerals Portland Cement Proportion Silica Fume
Publication/ Report Number:

FHWA/TX-90+450-3F
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Edition:

Final Report
Corporate Publisher:

University of Texas at Austin. Center for Transportation Research
Abstract:

The main objective of this study was to determine the influences of the constituents of portland cement, aggregates, and mineral admixtures on alkali silica reaction. The testing program included 3 natural aggregates, 3 Type I and 1 Type IP portland cements, 4 Type A and 5 Type B fly ashes, tap and distilled (low pH) water, and 1 source of silica fume. ASTM C 227 was the primary guideline for the evaluation and comparison of these materials, most of which are available for use in highway projects in the state of Texas. The results of this testing program demonstrated that: (1) Each of the natural aggregates studied can be used safely in concrete without mineral admixtures, if the cement is chosen carefully with respect to alkali content. (2) Each of the cements tested can be used in concrete with any of the aggregates tested, if a suitable mineral admixture is used as a partial replacement for cement in the proper proportion. (3) The silica fume and seven of the nine fly ashes tested reduced expansions considerably when used in proper proportions as partial replacements for cement, and (4) fineness of Type B fly ash does not affect significantly its effectiveness in reducing alkali-aggregate related mortar bar expansions.
Format:

PDF
Funding:

3-9-85-450
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:581f3b10d3783c242849c0f45981234a63ce69b727f4268e195d97865279f2c987282a5646019dedd0c705212e8c16abb726828acbad85cb28a9786405f7a072
Download URL:

https://rosap.ntl.bts.gov/view/dot/86025/dot_86025_DS1.pdf
File Type:

[PDF - 1.70 MB ]

File Language:

English

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